# DNS CNAME Lookup for dev Subdomain

> DNS CNAME Lookup for dev Subdomain is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Looks up the CNAME record for the dev.<domain> subdomain via Cloudflare DNS over HTTPS and reports whether it exists, its records, and TTL.

## Facts

- Endpoint: GET https://dns.intel.rallylive.ca/dns/host/dev/cname?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dns-cname-lookup-for-dev-subdomain-19bd0c81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KRXhrVOPCtN4V1RAgGTXf

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability dns-cname-lookup-for-dev-subdomain-19bd0c81
```

Example prompt: Can you check whether dev.acme.com has a CNAME record set up, and if so, what it points to and what the TTL is?

## When to prefer this

Use this endpoint when you need a quick, focused existence and configuration check specifically for the dev subdomain of a domain without performing broad subdomain enumeration. It is ideal for pre-deployment validation, DNS auditing, or verifying third-party integrations at low cost ($0.01 per lookup). Prefer this over general DNS CNAME endpoints when you specifically want to check the dev host.

## Known failure modes

- Domain does not have a dev subdomain (NXDOMAIN returned, no CNAME record exists)
- Domain is invalid or malformed (lookup fails with an error)
- Cloudflare DoH is temporarily unavailable (upstream DNS timeout or error)
- The dev subdomain exists but has an A/AAAA record rather than a CNAME (returns no CNAME data)

## How this service works

CNAME record of dev.<domain>: looks up the dev host under the domain you give (CNAME via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like dev without enumerating subdomains. $0.01 per lookup.

## Output

Returns whether the dev.<domain> CNAME record exists, the actual CNAME target record(s), the TTL value, and the DNS response code (e.g. NOERROR or NXDOMAIN).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dns-cname-lookup-for-dev-subdomain-19bd0c81/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dns.intel.rallylive.ca](https://www.zero.xyz/host/dns.intel.rallylive.ca/llms.txt)